Combined incinerator and water heater



June 17, 1930. w. c. EPsTElN 1,764,553

y COMBINED INCINERATOR AND WATER HEATER I Filed nec. 1o, 1928 Utl/p70@ v J mvg/won u U2U gw/u /AM c. fps TE//v ATTORNEY `Patented. .lune 17, 1930V WiDLIAM c. ErsTEIN, `or" DAYTON, OHIO, AssrGNOR'ro THEDuo-froia MANUFACTUR- ING- COMPANY,

or DAYTON, OHIO, A coRrortA'rroN orforrro,y Y

- COMBINED INGINDRATOR AND WATnnfi-IEATER- Application Vfiled. December 10, 1928.2y Serial No. 3245937.

This invention relates to a combined incinerator and Water heater and means for 'automatically controlling the same. Y

,One object ofthe inventionjis to provide a* combined fincinerator, andk Water `heater having meansfor automatically controlling the operation of` the burneriby-the flow of Water throughV the heater.

A furtherobject ofthe-invention is to pro- 1o vide such a combined incinerator and Water heater` in Which the burner will operate Whenever. f Water is Withdrawn fromV the heater and `which Will be providedvvith means for continuing the operation of the burner after i i5 the flowv of Water has been discontinued.

, A further object of the invention is to provide such a combined incinerator and heater in which the burner will be When Water is Withdrawn water y caused to operate y2,0 from the heater and having means for automatically interrupting the supply of fuel tothe burner, independently of the flow of Water, when the Water in the heater reaches an excessive temperature@ o f f .Other objects of the invention Will appear as the apparatus is described in detail.

The accompanying drawing is a vertical ysectional vieW of a combined incinerator and Water heater, With the Acontrolling mechanism in elevation.

In this drawing thc vsame as applied to a Water heater of thestorage type but it Will be understood that this particular embodiment has been chosen for the purposes of illustration only and that the apparatus may take various forms and may-be applied to Water 'heaters of various l kinds. l Y l lIn that form of the apparatus here shown the Water heater comprises a tank 1 which may, if desired, comprise a part of a domestic vvater heating system. n The tank 1s provided With a central vertical opening 2 extending entirely through the Ysainerso that:

in cross section it is an annular form. The 'tank is preferably provided with an insulated outer Wall, asshovvn at 3.Y The tank may be supported in anysuitable manner and, as here shown, it is mounted on a base I have illustrated, one embodiment of my invention and have shown casting 4 vvhich may be provided with gui@ able standards lor legs, not here shown. Mounted Withinv the central opening 2 of the tank and spaced from the lWall of that opening is a receptacle vor hopper 5 adapted to receive and support the refuse orwotlier i material to befcon'sumed. Thishopper is preferably supportedfon the tank andv is here shown as carried byra top casting 6 mounted Von the tank; lIn the present instance the hopper is directly secured to a flanged ring 7 which overhangs the top casting 6 andis provided With a movable closure 8 tovpermit the insertion of the refuse.V The lower portionof the hopper is slotted,'as

per, AWhich is not shown, is preferablyin the form of a grate. The vupper -portion of the hoppery is slotted, as shown at 10, to permit the*fumeskand'products of combustion to escape into an annularpassagevvay 11 which may be connected With a flue.

Mounted beneath they hopper, and preferably arranged Within the base casting 5, is

a burner 12 Which is here shown as annular in form and as having inner and outer fuel openings 18 and 14. The burnerais of such a size and so arranged that the flame vfrom the innerrfuelopening 13 Will direct its heat against the bottom'of the hopper and .into

the space betvveenthe hopperand the inner Wallof the tank. The flame from the outer fuel ,opening will direct its heat against the Vbottomzof the tank and upwardly through flues l5 arranged vertically in the tank. rfhe burner yis provided with a pilot burner 16 connected by a pipe 17 with a source of fuel supply, independent of the controlling means hereinafter described,` so that4 the pilot burner may operate continuously; o v

Fuel is supplied Vto the main burner 12 through a supply pipe 18 and the flow of fuel through this fuelsupply pipe is controlled by the flow of Water through the tank,V the latter being provided Withl the usualcold Water inlet pipe 19 andthe hot vvater outlet pipe 20, the outlet pipe leading to thehot Water distribution system or other pointrof discharge. The controlling means for the fuel supply pipe may take 'variousfforms but ico i shown at `9, and the bottom Wall of the hop-k l through the heater', and that tion chamber.

is here shown as comprising a valve 21 interposed in the fuel pipe 18 and connected with an actuating' device 22 interposed in the cold water supply pipe 19 and of such a character that when all outlets are closed and no water is flowing through the heater the Ivalve 21 will be closed, Lbut when an outlet `is opened and the pressure relieved the valve 21 will be opened to permit .the vHow of fuel to the burner. Controlling devices of this kind are well known and are commonly usedin connec` tion with instantaneous Water heaters -and therefore l have not shown in detail the construct-ion of the controlling device. It will be apparent that whenever Water is withdrawn fromfthe heater fuel will be admitted tothe main burner and will be ignited from the pilot Iburner and the main burner will continue to operate so Along as water flows the supply of fuel `to the :burner will be -interrupted when theI outlet is closed and water ceases to `flovv through the heater. The iiamefand products of combustion from the main burner will serve lto simultaneously consume the material within the hopper and to f'heat the water in thetank and the heat generated bytheburning of the refuse or other material in' the hopper will also serve 1to heat the water-in the tank. Ifhe het water inthe tank will maintain arelatively hiOh/temperature in the space surrounding the hopper, which constitutes a combustion chamber, and the material or refuse deposited inthe hopper will be subjected to the drying action of heat before there hasI lbeen any Lopera-tion of the burner and between subsequent loperations of the burner, thereby evaporating moisture therefrom and facilitating theburning thereof.

it is desirable that the waterin the tank should be maintained at a relatively high temperature both for the purpose of Vmaintaining tlie hot water supply and for maintaining the drying' action within the combus- Y rlhe construction of the tank is such .that the Vwater therein 'will be very quickly heated during the/operation of th burner ,butl when large quantities of water are Withdrawnthe temperature will fall 'below that desired and in order to raise the temperature ofthe water to the desired degreethe-burnerinust continue to operate after the fiow of water to the heater `has vbeen interrupted. Forthis purpose l have provided the heater with a second vfuel supply pipe 23 Vwhich is connected with the fuel supply pipe 1S Vin advance ofthe valve 2l, so that the iiow of fuel through Ithe second pipe, 23, is wholly independent of the valve 21. The flow of fuel through the second pipe, 23, is controlled by a thermostatic valve 24, the thermostat of which extends into the water tank. This thermostat is so adjusted that it will open 'the valve inthe supply pipe 23 when thetemperature of thewater falls lbelow a predetermined degree, say 115 degrees, and Will close that valve when the temperature rises to a predetermined degree, say 140 degrees. Consequently if, the amount of water withdrawn from the tank has been such as to lower the temperature of the water therein be'low the predetermined degree the valve '24 `will be 'opened and when the flow of water is interruptedand the ,valve 21 .isclosed fuel will `continue to iiow .to the fburner ,through the pipe 23 until the temperatureof the water has 1been raised :to the desired degree when the valve 24 will be closed.y

VShould .a hotwater .outlet be left slightly open there would be a continued small flow of water through the heater which might be sufficient-to causegthe valve 21 to remainopen but would ybe so small that the operation of the burner would cause the vWater in `the tank to be heated more rapidly than cold Water could enter the tank-through thesupply -pipe 19. Such a situation wouldcause the operation of the burner vto continue after the refuse in the -hopper had Ibeenconsumed and the water heated 'to Ythe vdesired degree and would result ina VWaste-0f fuel. Further, in eXtreme casesfthe water might be heated to the danger point. llhave therefore provided means other than the water valve 21 yto control t-he iiow of fuel through the main vsupply pipe 18. As here shown, a'thermostatic valve 26 is interposed inthe supply pipe -18 between the -Water valve 21 and the 'burner and has `its thermostat 27 inserted in the water tank. This thermostat is so adjusted'that the valve Will be closed when the water in the heater reaches an excessive temperature, say 1'60delcreces, but will he open all other times. Consequently in the normal operation of the apparatus vthe valve 26 does not function but in the event the water'in the heater -is heated to an excessive temperature the vail-ve 26 will be closed and the supply of fuel vthrough the main supply pipe 18 cut off. 'Inasmueh asthe thermostatic valve 24 will ,be closed before the valve 26 closes both fuel lines -Will be closed and will remain lclosed Vuntil the temperature ofthe water is lowered.

l/Vhile I have shown and described one embodiment of my invention I wish it to be -understood that I do not desire to be limited to the details thereof as various modifications may occur to a person skilled inthe art.

' Having now fully described my invention, what lclaim as new and desire to secure vby Letters Patent, is:

1.Y In an incineratingapparatus, a hopper to. receive material to be consumed, a water heating element lhaving an inlet and an outlet, a burner arranged lbeneath said hopper, a fuel supply pipe leading to lsaid burner, means controlled by the viiopw of water through said heating element to'control the operation of said burner, and means to maintain said burner in operation after the flow of Water y temperature of through said heating element has been interrupted.

2. In an incinerating apparatus, a hopper to receive material to be consumed, a `Water heating element having an inlet and an outlet, a burner arranged beneath said hopper,

a lfuel supply pipe leading to said burner,

means controlled by the flovv of water through said heating element to control the operation of said burner, and means controlled by the the Water in said heating element to maintain said burner in operation after the flow 0f Water through said heating element has been interrupted.

3. In an incinerating apparatus, a strueture comprising a combustion chamber, means to support material to be consumed Within said' combustion chamber, a Water heating ,Y

element arranged 'adjacent to said combustion chamber and having an inlet and an outlet, a burner arranged beneath said material supporting means, means controlled by rk the flow of Water through said heating element for supplying tion chamber Vand to fuel to said burner to consume the material Within said combusheat the Water in said Water heating element, and other means controlled independently of the flow of Water through said heating element to maintain the Water in said heating element at such a temperature that the heat therefrom Will tend to dry the material in said combustion chamelement that heat may yheating element comprising an inlet pipe an ber When said burner is not in operation.

4. In an incinerating apparatus, a refuse supporting elementto receive material to be consumed, a Water he(v ting element arranged in such relation to said refuse supporting be transmitted from one element to the other element, said Water a main burner arranged bea pilot burner associated With said main burner, a fuel supply pipe leading to said main burner, a valve in said fuel supply pipe, means interposed in one of the ypipes of said Water heating element and controlled by the .flow of Water through the same to control the operation of said fuel valve, and means controlled by the an outlet pipe, neath said elements,

y temperature of the 'Water in said Water heating element to supply fuelto said main burn- I said Water heating element er independently of said fuel valve.

'5. In an incinerating apparatus, supporting element to receive the material to be consumed, a Water heating element arranged in such relation to said refuse supporting element that heat may be transmitted from vone element to the other element, comprising an inlet pipe and an outlet pipe, a main burner arranged beneath said elements, er associated With said main burner, tWo fuel supply pipes connected With said main burner, means controlled-by the flow of Water 'through said Water kheating element to con-v 'tioned supply pipe d hereto.

a refuse a main burner arf ranged beneath said elements, a pilot burner l associated with saidV main burner, tvvo f uel supply pipes connected With said main fburn- Ver, means controlled by the flow of Water heating elementto cony y fuel through one of said supthrough said Water trol the iiow of ply pipes, a thermostatic valve interposed in the other supply pipe, va thermostatconnectf? ed With said thermostatic valve and extending into said Water heating element, athermostatic valve interposed in the first menbetWeen the first mentioned controlling means and said burner,

and a thermostat connected With the last mensaid Water tioned valve and extending into heating element.

`7. In an apparatus of the character described, a. Water heating element having an inlet and an outlet, a burner,`means controlled by the'flovv of Water through said heating element to supply fuel to said burner, and means controlled by the temperature of the water in said heating element to supply fuel to said burner independently of the first mentioned means.

In testimony whereof, I

- WrLLiAM `o; nrsTniN.

alhx my signature a pilot burnf 

